Oiling system



Patented May 7, 1940 PATENT oFF c l ApplicationJuly 2, 1937; Serial Nb.151,585 j Renewed October 37,1939

This invention relates to improvements in oiling systems for'internalcombustion engines.

It has been proven in actual tests that approximately fifty per cent ofthe wear on thepistons 5 and cylinder walls of an internalcombustionengine such as used in automobiles occurs-during the firstflve minutes the engine is run after having been idle for three hours ormore. The reason for this is thatwhen a warm engine is stopped 10 thelubricating oil drains down from the pistons and cylinder walls leavingthem dry and then when the engine is again started it requires some timefor the oil to work back up again leaving the parts during this timewithout the protection 15 of the necessary lubricant.

With the foregoing facts in mind it is the main object of my inventionto provide what might be termed an automatic overhead oiling systemwhich will automatically supply a predetermined amount of oil directlyatop the pistons each time the motor is started after cooling off andwhich will thus furnish lubricant suflicient to prevent undue wear untilsuch time as the oil from the usual oiling system works up to thepistons in .6 110111181 manner.

Another object is to provide an apparatus or device for this purpose ina simple and practical form including a housing having two oil chambers,one connected to the oil line and one to the intake manifold of theengine and with the passage between controlled by a valve which isconnected to a thermostat located in communication with either thecooling system or exhaust manifold of the engine in such manner thatwhen 35 .the engine is warm the passage will be shut off but when'themotor is cool the passage will open and the oil will run to the intakemanifold there to be drawn into the enginewhen it is started.

With these and other objects in view the ino vention resides in thenovel construction and arrangement of parts as hereinafter fully setforth and claimed, reference being had to the accompanying drawing asshowing a preferred embodiment of my invention for purposes ofexemplifi- 45 cation.

In the drawing:

Figure l is a side elevation, of a conventional type of engine with myoiling system in use thereon.

50 Figure 2 is an enlarged cross section of my apparatus alone.

in carrying out my invention I provide a housing shown generally atcomprising a main section, casing or body 2, a bottom well or cup 3 andu an upper cap or head 4. The casing 2 is cylindrical in form with theopen flanged upper end 5 and the diametrically enlarged and flangedlower end. 6 and with the intermediate closed wall or bottom'l. The well3 is flanged at its upper end 8 and secured by screws 9 to the bottom 65 of the casing 2 and from that point tapers downwardly to-terminatefinally in .the tapped nipple Ill. In this manner a well chamber orthermostat chamber H is formed below the wall I and a conventional formof disk or bulb thermostat 10 is located therein, the margins of thethermostat being anchored between the adjacent flanged ends of thecasing 2 and well 3.

The head 4 is flanged at its lower end I2 and is secured by screws l3 tothe upper end 5 of the casing 2. This head also has a central or axialtapped bore M in alignment with the vertical axis of the unit as a wholeand has a radially extended inlet passage I5 leading out through oneside. A large screw I6 is threaded into the upper end of the bore l4above the level of the passage l5 and below the same a valve bushing I1is screwed in the bore, the said bushing having the central port It!flared into a seat l9 at its lower portion. I a

The wall I has a central bore 20 for the reception of a valve push rod2| which is secured at 22 to the upper shell of the thermostat T and. isthreaded at 23 at its upper end. A needle valve 24 is screwed on thisupper end of the push rod 2| and is thuslined up so that its tapered end25 will enter the valve seat l9 oi the bushing I! when the thermostatexpands or swells and will thus close oiT communication with the casing2 through the bore l4. An inverted cup-shaped hood 26 is secured to thevalve push rod 2| below the valve 24 by nuts 21 screwed on the rod.

The wall I which forms the bottom of the lower or outlet oil chamber 28within the casing 2 is of rounded formation as shown at 29 with 4 anupwardly sweeping central boss 30 around the upper opening of the bore20 and the hood 26 hanging over this boss will prevent oil from. runningdown through the bore as will be understood.

An outlet passage 3| leads from the lowest point of the chamber 28 outradially through the wall of the casing 2 and both this passage and theaforesaid inlet passage I5 are tapped at their outer ends as at 32 forthe reception of convenso tional couplings 33.

In use the unit is mounted and connected to the engine E by a pipe 34which is screwed into the nipple I0 and into the water jacketed cylinderhead C so that the water from the cooling system enters the well chamberII. In lieu of this the pipe 34 may lead to the exhaust manifold (notshown). 'A line or tube 35 is then led from the inlet passage I5 to theoil line L feeding the usual oil gauge G (or to any other part of theoiling system) and another line 36 is led from the outlet passage 3| tothe intake manifold M. Then oil will enter the passage I5 and flow intothe bore I 4 filling the same. The oil flow may be controlled by ametering pin valve 31 of usual form and the volume of the bore may bevaried by screwing the screw I 6 in or out as required.

The engine being cold the Water in the chamber I I is cold and thethermostat T is in a contracted condition so that the needle valve 24 ispulled out of its seat I9 as shown in Figure 2 The oil will then runinto the chamber'ZB and out through the passage 3| and line 36 into themanifold ML As soon now as the engine is started this: oil will be drawninto the tops of the cylinders and will lubricate the same until theusual engine oiling system takes up its work. As soon as the water inthe well chamber I! warms up then'the thermostat T will expand closingthe valve 24 and sealing the bore I4 so that a quantity of oil will fillthe same ready for the next operation. This valve 24 will remain closeduntil the engine again cools off and it will be evident therefore thatthe action is entirely automatic. The screw I6 permits adjustment of theamount of oil to suit any number of cylinders and the metering pin,

cal device for the purposes intended, not departing from the spirit ofthe invention and within the scope of the appended claim.

I claim: 1

In combination with an engine including an'oil line, an intake manifold,a housing having a bore with aninlet connected to the oil line, a valveoperating adjacent the bore, the said housing having an oil chambercommunicating with the bore when the valve is open and having als o awell connected to the engine wherebyneat from the engine will enter thewell, a thermostat in the well and connected to the said valve; a lineconnecting the said oil chamber to the intake manifold of the engine,and means for varying the volume of the said bore.

